US20120292073A1 - High-voltage bushing - Google Patents

High-voltage bushing Download PDF

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Publication number
US20120292073A1
US20120292073A1 US13/522,360 US201113522360A US2012292073A1 US 20120292073 A1 US20120292073 A1 US 20120292073A1 US 201113522360 A US201113522360 A US 201113522360A US 2012292073 A1 US2012292073 A1 US 2012292073A1
Authority
US
United States
Prior art keywords
winding body
voltage bushing
voltage
electrically insulating
bushing according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/522,360
Other languages
English (en)
Inventor
Engelbert Engels
Michael Koch
Achim Langens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOCH, MICHAEL, ENGELS, ENGELBERT, LANGENS, ACHIM
Publication of US20120292073A1 publication Critical patent/US20120292073A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • the invention relates to a high-voltage bushing having an electrically insulating winding body which extends in a longitudinal direction and has electrically conducting inserts wound on a winding core, said inserts being spaced apart from one another by insulation layers impregnated in resin, a high-voltage conductor extending as a winding core in the winding body, and a fixing flange attached to the winding body in a fixing area thereof for installation of the high-voltage bushing.
  • Such a high-voltage bushing is already known from DE 32 26 057 A1.
  • the high-voltage bushing shown therein has a high-voltage conductor which extends through an electrically insulating winding body.
  • a fixing flange which surrounds the winding core so as to clamp it, is used for fixing the whole high-voltage bushing to the boundary wall of a through-opening.
  • the winding body has potential control inserts which are electrically conducting, wherein the potential control inserts are spaced apart from one another by insulation layers impregnated in resin.
  • Such a high-voltage bushing is also referred to as a capacitor bushing. It is used mainly to feed a high electrical voltage through a wall which is at ground potential.
  • the high-voltage bushings disclosed in the prior art Associated with the high-voltage bushings disclosed in the prior art is the disadvantage that they can only be sized in such a way that they can be used at DC levels up to 550 kV.
  • the windings which can be produced in accordance with the prior art already have a resin mass of 1500 to 2000 kg. In order to make higher voltages controllable, even greater clearances must be maintained. However, the consequence of this is even larger and therefore heavier winding bodies.
  • their mounting brackets would be affected by cracks and other undesirable side-effects, particularly due to the high inherent weight of such winding bodies, so that they would be impossible to use in practice.
  • the object of the invention is therefore to improve a high-voltage bushing of the kind mentioned in the introduction in such a way that it can also be used for DC voltage levels of greater than 550 kV.
  • the invention achieves this object in that the winding body has different thicknesses in its fixing region, thus forming diameter change regions in which the winding body has different diameters at different positions in its longitudinal direction.
  • the high-voltage bushing according to the invention has a winding body with diameter change regions.
  • the diameter change regions lie in a fixing region of the winding body with which the fixing flange mechanically engages.
  • the winding body no longer presses against the circumferential edge of the fixing flange. Rather, this results in a transmission of force between fixing flange and winding body which is spread over a larger area compared with the prior art, so that a heavier winding body can also be mechanically held by the fixing flange without difficulty.
  • the fixing flange is complementary in shape to the diameter change regions.
  • the diameter change regions are in the form of steps, wherein, in a cross-sectional view of the winding body, steps are formed at the outer circumference of the winding body, at its inner side which rests clamped to the winding body, the fixing flange also likewise has a step-shaped inner contour, which in the assembled state engages with the steps of the winding body.
  • a transmission of force between fixing flange and winding body which is spread over an even larger area is provided by this complementarily shaped design.
  • the fixing flange is attached to the fixing body by clamping.
  • At least one diameter change region forms at least one chamfer in a cross-sectional view of the high-voltage bushing.
  • a chamfer provides a particularly smooth transmission of force between fixing flange and winding body, as sharp edges are completely avoided.
  • Alternative embodiments of the diameter change region are a step-shaped embodiment or similar, for example.
  • the high-voltage conductor are made of aluminum.
  • aluminum has a lower density, so that, in spite of large dimensions, the high-voltage bushing designed in this way is lighter, and fewer forces due to the weight have to be absorbed by the fixing flange.
  • an outer housing into which the winding body partially extends, is provided.
  • an outdoor connection on which an outdoor dissipation device for dissipating high electrical field strengths is located, is formed on the outer housing.
  • the winding body according to the invention has a length of greater than 7000 mm and a diameter of more than 500 mm.
  • FIG. 1 shows a part of an exemplary embodiment of a high-voltage bushing according to the invention in a cross-sectional view
  • FIG. 2 shows the fixing region of the winding body of the high-voltage bushing according to FIG. 1 .
  • FIG. 3 shows an enlarged view of the fixing region according to FIG. 2 without fixing flange.
  • FIG. 1 shows in cross section the upper part of an exemplary embodiment of a high-voltage bushing 1 according to the invention which has a winding body 2 and a high-voltage conductor 3 .
  • the high-voltage conductor 3 extends centrally through the electrically insulating winding body 2 in a longitudinal direction.
  • the high-voltage conductor 3 is tubular and hollow inside and has a copper section 4 arranged in the winding body 2 and an aluminum section 5 which extends from the winding body 2 to an outdoor end 6 .
  • An outdoor dissipation device 7 is provided at the outdoor end 6 .
  • the outdoor dissipation device 7 has two dissipating rings 8 which are electrically connected to the aluminum section 5 and are used to dissipate high electrical field strengths.
  • the winding body 2 is securely clamped to a fixing flange 9 which extends in the form of a ring around the winding body 2 .
  • An outer housing 10 extends from the fixing flange 9 to the outdoor end 6 , wherein the outer housing 10 only has external ribs, which can hardly be seen in FIG. 1 , to increase a creepage current path.
  • the outer housing 10 comprises a glass filament/epoxy resin tube with silicone coating.
  • a transformer end 11 to which field control elements are likewise attached but which are not shown in the figure, is formed on the side of the high-voltage bushing 1 which faces away from the outdoor end 6 .
  • FIG. 2 shows the region bordered by the dashed line in FIG. 1 in an enlarged view.
  • the fixing flange 9 is made up of a transformer-side section 12 and an outdoor-side section 13 .
  • the transformer-side section 12 has a transformer fixing ring 14 with set holes 15 which enable the high-voltage bushing 1 to be screwed to a wall in which a through-opening is formed.
  • the winding body 2 and therefore the high-voltage conductor 3 extends through the through-opening of the wall, which is at ground potential, wherein the winding body 2 provides the necessary insulation to prevent voltage flashovers.
  • Electrically conducting inserts 16 which were wound as a winding core onto the high-voltage conductor 3 together with non-electrically-conducting insulating layers 17 , for example paper or a felt material, are used to dissipate the high electrical field strengths.
  • the paper or felt material was subsequently impregnated in liquid resin. After the resin has hardened, an electrically insulating and mechanically stable winding body 2 , which is designed for high direct voltages of greater than 800 kV and has a length of 10,000 mm, a diameter of 600 mm and a weight of 4500 kg, is produced.
  • the transformer-side section 12 is connected to the outdoor section 13 by means of connecting rings 18 .
  • the surface region, with which the winding body 6 rests against the fixing flange 9 is here designated as fixing region 19 .
  • the outer housing 10 is also connected to the fixing flange 9 and the winding body 2 by means of connecting rings 18 .
  • FIG. 3 which shows a region which is bordered by a dashed line in FIG. 2 , diameter change regions 20 in which the thickness of the winding body 2 changes in the longitudinal direction are formed in the fixing region 19 .
  • the diameter change regions 20 are in the form of steps, wherein the steps have chamfers.
  • the fixing section 19 and the outer housing 10 are complementary in shape to the diameter change regions 20 so that the forces are transmitted between winding body 2 and fixing flange 9 over a large area via the chamfers. This prevents high bending forces at the edges of the fixing flange 9 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
US13/522,360 2010-01-15 2011-01-07 High-voltage bushing Abandoned US20120292073A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010005086.5A DE102010005086B4 (de) 2010-01-15 2010-01-15 Hochspannungsdurchführung
DE102010005086.5 2010-01-15
PCT/EP2011/050148 WO2011086033A1 (de) 2010-01-15 2011-01-07 Hochspannungsdurchführung

Publications (1)

Publication Number Publication Date
US20120292073A1 true US20120292073A1 (en) 2012-11-22

Family

ID=43828099

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/522,360 Abandoned US20120292073A1 (en) 2010-01-15 2011-01-07 High-voltage bushing

Country Status (4)

Country Link
US (1) US20120292073A1 (de)
CN (1) CN102714077A (de)
DE (1) DE102010005086B4 (de)
WO (1) WO2011086033A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9837184B2 (en) * 2015-06-26 2017-12-05 Siemens Aktiengesellschaft High-voltage insulator
US9947442B2 (en) 2016-04-04 2018-04-17 Siemens Aktiengesellschaft High-voltage bushing and high-voltage installation with the bushing
US10014676B2 (en) 2014-05-12 2018-07-03 Siemens Aktiengesellschaft High-voltage bushing
CN108736400A (zh) * 2018-08-09 2018-11-02 山东辰祥电气设备有限公司 胶浸毡高压套管

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3561819B1 (de) * 2018-04-26 2022-01-26 Hitachi Energy Switzerland AG Buchse mit einer optischen faser

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994267A (en) * 1931-09-25 1935-03-12 Ohio Brass Co Bushing insulator
US2145710A (en) * 1936-04-01 1939-01-31 Gen Electric Capacitance device
US2149086A (en) * 1935-03-30 1939-02-28 Gen Electric Electrical capacttor
US3187175A (en) * 1963-03-21 1965-06-01 Mc Graw Edison Co Power distribution system
US3474393A (en) * 1966-10-17 1969-10-21 Westinghouse Electric Corp High voltage cable terminal
US3513253A (en) * 1968-07-24 1970-05-19 Westinghouse Electric Corp Cast condenser bushing having tubular metal coated mesh plates
US3515799A (en) * 1969-02-11 1970-06-02 Westinghouse Electric Corp Electrical bushing mounted in casing with foamed resin
US3627906A (en) * 1970-09-24 1971-12-14 Westinghouse Electric Corp Electrical condenser bushing assembly
US3869113A (en) * 1973-07-16 1975-03-04 Gen Tire & Rubber Co High load bushing
US3967051A (en) * 1975-05-22 1976-06-29 Westinghouse Electric Corporation Cast resin capacitor bushing having spacer members between the capacitor sections and method of making same
US4818319A (en) * 1985-04-04 1989-04-04 Bbc Brown, Boveri & Company, Limited Process for reducing the water vapour diffusion in a plastics composite insulator consisting of several layers
US4835341A (en) * 1988-03-08 1989-05-30 Maxwell Laboratories, Inc. Electrical insulator for use in plasma environment
US4846163A (en) * 1987-08-24 1989-07-11 Cooper Industries, Inc. Method of sealing capacitor bushings
US5504419A (en) * 1992-04-03 1996-04-02 Moser-Glaser & Co. Ag Rod-core current transformer
US6194986B1 (en) * 1998-11-03 2001-02-27 Lapp Insulator Company Quick bottom connection for a transformer bushing
US6678139B1 (en) * 1999-06-14 2004-01-13 Abb Research Ltd High voltage lead-through
US20100206604A1 (en) * 2007-10-26 2010-08-19 Abb Research Ltd. High-voltage outdoor bushing
US20100294562A1 (en) * 2009-05-25 2010-11-25 Abb Technology Ag Electrical conductor for a high-current bushing
US20110079424A1 (en) * 2009-10-07 2011-04-07 Terry Edward Frye Wildlife guard assemblies and methods for using the same
US20110150599A1 (en) * 2009-12-16 2011-06-23 Fatigue Technology, Inc. Modular nut plate assemblies and methods of using the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339677A (en) 1929-09-13 1930-12-15 Reyrolle A & Co Ltd Improvements in or relating to electric conductors
GB564952A (en) * 1942-07-02 1944-10-19 Bbc Brown Boveri & Cie Bushing for electrical conductors passing through the metal casing of high voltage apparatus
GB654952A (en) 1948-07-01 1951-07-04 Hub Raskin Atel Improvements in or relating to safety guards for mechanical presses
US3604830A (en) 1969-11-26 1971-09-14 Westinghouse Electric Corp Space and temperature accommodating self-cleaning weather casing and high voltage insulating structure employing the same
DD161044A3 (de) * 1980-11-04 1984-08-29 Liebknecht Transformat Sicherungseinrichtung fuer hochspannungs-kondensator-durchfuehrung
DE3226057A1 (de) 1982-07-12 1984-01-12 Siemens AG, 1000 Berlin und 8000 München Hochspannungsdurchfuehrung mit einem gewickelten isolationskoerper
CN2437065Y (zh) * 2000-06-23 2001-06-27 西安电瓷研究所 干式复合电容式套管
CN2509688Y (zh) * 2001-12-08 2002-09-04 弥璞 纯干式复合外套高压套管
CN1427423A (zh) * 2001-12-19 2003-07-02 孟繁恒 一种交流高压套管
CN2591820Y (zh) * 2003-01-07 2003-12-10 孙闻峰 干式高压套管

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994267A (en) * 1931-09-25 1935-03-12 Ohio Brass Co Bushing insulator
US2149086A (en) * 1935-03-30 1939-02-28 Gen Electric Electrical capacttor
US2145710A (en) * 1936-04-01 1939-01-31 Gen Electric Capacitance device
US3187175A (en) * 1963-03-21 1965-06-01 Mc Graw Edison Co Power distribution system
US3474393A (en) * 1966-10-17 1969-10-21 Westinghouse Electric Corp High voltage cable terminal
US3513253A (en) * 1968-07-24 1970-05-19 Westinghouse Electric Corp Cast condenser bushing having tubular metal coated mesh plates
US3515799A (en) * 1969-02-11 1970-06-02 Westinghouse Electric Corp Electrical bushing mounted in casing with foamed resin
US3627906A (en) * 1970-09-24 1971-12-14 Westinghouse Electric Corp Electrical condenser bushing assembly
US3869113A (en) * 1973-07-16 1975-03-04 Gen Tire & Rubber Co High load bushing
US3967051A (en) * 1975-05-22 1976-06-29 Westinghouse Electric Corporation Cast resin capacitor bushing having spacer members between the capacitor sections and method of making same
US4818319A (en) * 1985-04-04 1989-04-04 Bbc Brown, Boveri & Company, Limited Process for reducing the water vapour diffusion in a plastics composite insulator consisting of several layers
US4846163A (en) * 1987-08-24 1989-07-11 Cooper Industries, Inc. Method of sealing capacitor bushings
US4835341A (en) * 1988-03-08 1989-05-30 Maxwell Laboratories, Inc. Electrical insulator for use in plasma environment
US5504419A (en) * 1992-04-03 1996-04-02 Moser-Glaser & Co. Ag Rod-core current transformer
US6194986B1 (en) * 1998-11-03 2001-02-27 Lapp Insulator Company Quick bottom connection for a transformer bushing
US6678139B1 (en) * 1999-06-14 2004-01-13 Abb Research Ltd High voltage lead-through
US20100206604A1 (en) * 2007-10-26 2010-08-19 Abb Research Ltd. High-voltage outdoor bushing
US20100294562A1 (en) * 2009-05-25 2010-11-25 Abb Technology Ag Electrical conductor for a high-current bushing
US20110079424A1 (en) * 2009-10-07 2011-04-07 Terry Edward Frye Wildlife guard assemblies and methods for using the same
US20110150599A1 (en) * 2009-12-16 2011-06-23 Fatigue Technology, Inc. Modular nut plate assemblies and methods of using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10014676B2 (en) 2014-05-12 2018-07-03 Siemens Aktiengesellschaft High-voltage bushing
US9837184B2 (en) * 2015-06-26 2017-12-05 Siemens Aktiengesellschaft High-voltage insulator
US9947442B2 (en) 2016-04-04 2018-04-17 Siemens Aktiengesellschaft High-voltage bushing and high-voltage installation with the bushing
CN108736400A (zh) * 2018-08-09 2018-11-02 山东辰祥电气设备有限公司 胶浸毡高压套管

Also Published As

Publication number Publication date
CN102714077A (zh) 2012-10-03
DE102010005086B4 (de) 2018-05-24
DE102010005086A1 (de) 2011-07-21
WO2011086033A1 (de) 2011-07-21

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Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ENGELS, ENGELBERT;KOCH, MICHAEL;LANGENS, ACHIM;SIGNING DATES FROM 20110611 TO 20120613;REEL/FRAME:028755/0883

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION